【Extension Tube Material】The part of camera mount is made of Aluminum, the part of lens mount is made of high quality brass, while the tube is made of high quality ABS plastic
【Extension Tube Function】Shortens minimum focusing distance of lens for macro photography, convert almost any lens into a macro lens, save your cost of buying an expensive macro lens
【Three Extension Tubes】Extension tubes of 12mm, 20mm and 36mm lengths can be used individually or in any combination of the three for greater magnification
【Dust Free Air Blower】"No-backflow" design, ensure a clean, strong blast of air, a safe and perfect cleaning solution for your digital SLR, lenses, filter and other sensitive electronic equipments.
【Dust Free Air Blower】Silicone soft cap tip to prevent accidental damage to your gear. Single-way air valves at both air intake and outtake ensure clean air blown out, filter at the intake of the blower prevents the introduction of everyday dust, quartz, and sand debris with diameter over 21 microns